Suo, Hang published the artcileKinetic study of the ultrasonically assisted ethyl esterification of fatty acids using an immobilized lipase catalyst and deep eutectic solvent, COA of Formula: C11H22O2, the main research area is kinetic ultrasonically assisted ethyl esterification fatty acid immobilized lipase.
In this study, the esterification reaction kinetics of biodiesel (fatty acid Et ester) prepared from waste oil (cooking oil waste and oleic acid mixture) and ethanol at three different temperatures (313.15, 323.15, and 333.15 K) by lipase (Novozym 435) catalyzed. It was investigated under three different reaction systems of ultrasonic (without DES), deep eutectic solvent (DES, choline chloride: glycerol mole ratio = 1:2, without ultrasonic), and ultrasonic-assisted DES. The results showed that the combination of the ultrasonic and DES had a synergistic effect on the enzymic reaction. The activation energy of the reaction was the smallest (24.82 kJ/mol) compared to the other two processes (ultrasonic: 34.38 kJ/mol and DES: 29.43 kJ/mol), and the reaction was easier to proceed. Subsequently, the reusability of lipase and the composition of the product were studied. The results showed that the conversion rate of fatty acid Et ester decreased from the initial 93.33% to 80.31% when the experiment was repeated five times in the ultrasonic-assisted DES system. The Et ester composition of the product was mainly concentrated between C14 and C24, and the proportion of Et oleate was the most abundant.
International Journal of Chemical Kinetics published new progress about Acoustic devices. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, COA of Formula: C11H22O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics